package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.*;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.admin.EmployeeService;
import com.sky.utils.JwtUtil;
import com.sky.vo.EmployeeLoginVO;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

/**
 * 员工处理业务逻辑实现
 *
 * @author mei
 */
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;
    @Autowired
    private JwtProperties jwtProperties;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO 员工登录时传递的数据模型
     * @return 员工实体对象
     */
    @Override
    public Result<EmployeeLoginVO> login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //  后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //登录成功后，生成jwt令牌
        Map<String, Object> claims = new HashMap<>();
        claims.put(JwtClaimsConstant.EMP_ID, employee.getId());
        String token = JwtUtil.createJWT(
                jwtProperties.getAdminSecretKey(),
                jwtProperties.getAdminTtl(),
                claims);
        EmployeeLoginVO employeeLoginVO = EmployeeLoginVO.builder()
                .id(employee.getId())
                .userName(employee.getUsername())
                .name(employee.getName())
                .token(token)
                .build();
        //3、返回结果
        return Result.success(employeeLoginVO);
    }

    @Override
    public Result<String> add(EmployeeDTO employeeDTO) {
        //TODO 校验参数
        //校验用户名唯一
        Employee doEmployee = employeeMapper.getByUsername(employeeDTO.getUsername());
        if (Objects.nonNull(doEmployee)) {
            throw new EmployeeNameExistException(doEmployee.getName() + "已存在");
        }
        Employee employee = new Employee();
        //将接受的属性拷贝给员工实体对象
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置未拷贝的属性
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.DISABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
        return Result.success();
    }

    @Override
    public Result<PageResult> pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //校验参数
        int page = employeePageQueryDTO.getPage();
        int pageSize = employeePageQueryDTO.getPageSize();
        if (page <= 0 || pageSize <= 0) {
            throw new ParamIllegalException("非法参数");
        }
        PageHelper.startPage(page, pageSize);
        Page<Employee> employeePage = employeeMapper.selectPageByName(employeePageQueryDTO.getName());
        PageResult pageResult = PageResult.builder()
                .total(employeePage.getTotal())
                .records(employeePage.getResult())
                .build();
        return Result.success(pageResult);
    }

    @Override
    public Result<String> startOrStop(Integer status, Integer id) {
        //根据id查询员工
        Employee employee = employeeMapper.selectById(id);
        //设置状态和更新人id和更新时间
        employee.setStatus(status);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateStatusById(employee);
        return Result.success();
    }


}
